This patch adds some errors and warnings where there were none before:
    If someone typos "ubd" as "udb", that is caught and a warning is printed
    If a ubd file can't be opened, that now results in an error message
    If there are more telnet connections to port consoles than there are
consoles, then a message will appear in the telnet session explaining why
there is no login prompt.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>